I disagree with this. It definitely works with some coaches, not others. Phil Jackson was incredibly successful in his system when he had the right guys. Popovich. Brad Stephens. etc etc
We are not going to have the same guys next year. So clearly, it's not going to matter as far as fitting square pegs into round holes* as time moves on. That's rebuilding. It's fine, as long as we keep moving forward.
Now you can disagree with some of Hurley's rotations, needing a quicker hook and whatever, and I'd be fine with that. But I'd argue he should want to instill his system into the young guys now, so that they'll be able to play it next year unconsciously and integrate the new guys seamlessly.
I'd also argue that for college basketball, consistency of system is very important. It's how you get new/quality recruits, as they know where/how they will be playing. Recruits don't want to hear "Don't worry we'll find a place for you".
*I think people make way too much of the Hurley factor right now. Yes, he still needs to develop as a coach, and he's aware of that. But we don't have great personnel right now. A lot of limited players. I'm not going to talk about individuals, as they seem like good kids, but ignoring their significant limitations is foolish imo.